An organisation called Mars One is planning to establish a permanent colony of humans on Mars by 2023.
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According to a study by the National Science Foundation, only half of Americans believe in evolution, and one in 4 don't know that the Earth orbits the Sun.
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Jupiter is bigger than all the other planets combined.
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An international team of astronomers has spotted the farthest known gravitational lens and, as Albert Einstein predicted, it is a galaxy that deflects and intensifies the light of a much further object.
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In the last 7 years, humanity has discovered 43 potentially habitable planets.
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It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
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The last time that the Sun was in its current position in space around the Milky Way, dinosaurs ruled the Earth.
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